OFFSET CORRECTION CONTROL DEVICE AND OFFSET CORRECTION CONTROL METHOD FOR CONTINUOUS TACK WELDING DEVICE

摘要

This offset correction control device for a continuous tack welding device uses a plurality of roller cages to constrain a cylindrical steel sheet and butts the width-wise ends of the steel sheet mutually together to continuously tack weld the same. The offset correction control device for a continuous tack welding device comprises: a detection means for detecting the amount of offset between the width-wise ends of the steel sheet in the butting sections; and an offset correction control means for regulating the constraining force of the roller cages disposed on both sides of the butting section so that the offset amount is less than a prescribed value when the offset amount detected by the detection means is greater than or equal to the prescribed value, and for reducing the constraining force of other roller cages when the offset amount is greater than the prescribed value even after the constraining force of the roller cages disposed on both sides of the butting section is adjusted.